Individual characteristics and gain ratios of surface plasmon resonance and Tamm plasmon resonance in optical Tamm states

In this study, we enhanced Tamm plasmonic polariton (TPP) by adjusting the thickness of the indium tin oxide (ITO) layer, which altered the material's optical properties and electric field distribution, strengthening Tam plasma resonance (TPR) at specific wavelengths. Modifying the metal density in the ITO layer created a structure that supports surface plasmon (SP) modes, further amplifying surface plasmonic polariton (SPP). These changes improved SP mode coupling efficiency and resonance intensity. Optical model analysis and experiments revealed the resonance behaviors of TPP and SPP, showing changes in transmission spectra in the ultraviolet and visible regions. Raman spectroscopy confirmed variations in TPP and SPPintensities under different ITO thicknesses and metal densities, supporting theoretical predictions. In optical Tamm states (OTS), SP modes showed a higher amplification factor (1.68) than TP modes (0.83). It is used in the test of atmosphere, chloramphenicol and chloramphenicol aqueous solution. As a structure of surface-enhanced resonance Raman scattering (SERRS), it is sensitive. The gain ratio is in line with the amplification coefficient obtained in the ultraviolet and visible light regions. It has a positive effect on the bonding state of the oxygen element. Due to the regular signal drift phenomenon, the decomposition signal of chloramphenicol in aqueous solution can be captured. The signal difference is very small after repeated use after cleaning. Based on the Raman spectrum signals of molecules and in situ after repeated use, SERRS was carried out. Material history analysis supports theoretical predictions. This research advances optical engineering by providing insights into light-matter interaction and guiding future optical material design. In addition, we applied this technology to the detection of Chloramphenicol, which presents a promising new method for testing in aquaculture and environmental safety monitoring.